MSP430FR5969: 1-Wire bus sniffer

Bruce Lane

I've already found an application note, and sample software, to get the eval board to act as a 1-wire device EPROM emulator. I'm wondering if software exists to let the same board 'sniff' the 1-wire bus (as in monitor it and display/decode whatever comes across it to, say, an RS232 port).

Perhaps the existing app could be modified to do this...? I'm still a relative novice where microcontrollers are concerned.

Thanks!

over 3 years ago

0 Cash Hao11 over 3 years ago

TI__Mastermind 46765 points

Hi,

Which app note you are looking now as the 1-wire EEPROM emulator? Could you share the link of it?

Best regards,

Cash Hao

0 Bruce Lane over 3 years ago in reply to Cash Hao11

Prodigy 10 points

Certainly. Here's the link I found it at:

https://www.ti.com/tool/TIDM-1WIREEEPROM

I hope that helps.

0 Cash Hao11 over 3 years ago in reply to Bruce Lane

TI__Mastermind 46765 points

Hi,

I checked the appnote. The communication protocol is based on using a timer to measure the pulse widths. I do not think we can decode the data on the line based on it.

If you still need to sniff the 1-wire bus, you can use another GPIO pin set to input mode and connect to the bus. Then read out the data from that pin.

Best regards,

Cash Hao

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MSP430FR5969: 1-Wire bus sniffer